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Would appreciate advice on laptop overheating and registry issue

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mouser:
if you blow air in -- make sure the latop is off first!

4wd:
The reason that I am not a fan of the canned air solution is that you can (seriously) damage fan(s). Blowing air directly at a fan will make it rotate at an RPM rate it was not designed for. Securing the fan(s) will prevent that, but I'll guarantee you that not all dust bunnies are removed from their burrow otherwise known as your laptop.-Shades (July 04, 2009, 06:32 PM)
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I agree with you Shades, not only will it rotate the fan at possibly speeds it wasn't designed for but the main reason not to rotate the fan is: you've just turned it into a wind generator and where's all that generated voltage going?  That's right, down those two wires into your motherboard.

Also, regarding compressed air dusters, you're blowing the dust into nooks and crannies where it will just jam in harder.

If you're going to clean the dust out of a PC's internals, grab a soft-bristled brush, gently dislodge the dust/fluff/etc, and then vacuum it out holding any fans to stop them spinning.  Make sure you're grounded and hold onto the vacuum as close to the end of the nozzle as possible to prevent any buildup of static that might discharge into your electronics, (with any luck any buildup will discharge into you instead :P ).

TucknDar:
The canned air has worked for me, but as I said, I found a guide explaining how to use it for my particular laptop. The guide included instructions to secure the fans so they wouldn't rotate. I'd never have tried this without a set of clear instructions. Cotton sticks (don't know a better word for it...) and a vacuum was indeed also very helpful in removing the dust. Temperature during normal use went from about 55C to 40C.

But search for your particular laptop model to find specific instructions, which can hopefully be found somewhere.

40hz:
But search for your particular laptop model to find specific instructions, which can hopefully be found somewhere.
-TucknDar (July 05, 2009, 02:57 AM)
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Good advice. If at all possible, never attempt to perform service on any laptop without checking the service manual first. Laptops are often assembled in unorthodox ways, making them very easy to damage accidentally. Since most manufacturers provide free service documentation on their websites, it's usually not worth the risk or hassle of trying to figure things out for yourself. Especially if any disassembly is required. Cracking open a laptop without reading the "take apart" instructions is just asking for trouble - even if you know what you're doing.

We have a saying at my company:

If you don't know what you're doing - check the docs first.
If you do know what you're doing - check the docs anyway.

Just my 2¢ (based on many years of fixing various laptops).
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All 118 pages of the Service and Reference Manual for the Versa 6000 Series can be downloaded from NEC at this link:

http://support.necam.com/download/versa6000sr.pdf

Main support information page for the 6000 series notebooks can be found here:

http://support.necam.com/mobilesolutions/hardware/notebooks/versa6000/

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Note: There are several websites that will sell you copies of service documentation for various machines. Don't bother with them unless you can't obtain a manual directly from the manufacturer.

Tip: Just because the manual you need does not show up on a search of the manufacturer's website doesn't automatically mean it's no longer available. If you can't locate a manual via the search feature, try sending an e-mail to the customer service and/or tech support addresses.

9 times out of 10 they'll get back to you with a link to what you need.

Luck! :Thmbsup:

mosey:
Hi all

Firstly: thank you all very, very much for taking the time to provide little me with all your thoughts and advice!  ;D  I almost thought I'd clicked on the wrong thread as I read through the many different posts.

After going through what everyone has said, I think it might be best for me to start by clearing out this dust.

As TucknDar asked, I haven't actually ever cleared out the laptop fan of 'dust' (just attempting to hoover around the back of the grill)  so this might well be a major factor. I was about to rush out to buy a can of this compressed air (I've used it in the office for my keyboard) after reading through mrainey's link by Fred Langa. Then read about the possibility of electrical discharges and fans turning the wrong way mentioned by Shades and 4wd and so decided to hold back.

This really is a huge learning curve for me (and a big phew!) - it seems like there are quite a few  pitfalls to look out for -  I had a look at the service and reference manual links kindly posted by 40hz, but realised that NEC have, very surprisingly, posted downloadable service manuals for some really old models (e.g. Versa 6000)  and really news ones, but nothing for those inbetween (including my Versa E6000) - so I've taken his advice and have dropped Tech Support an email to request for a similar manual.

Hopefully I'll be able to identify all the necessaries specific to the Versa E6000 to start clearing out the dust very soon, but if push comes to shove, I think I will take up mouser's advice and just buy a new one.

Especially now that the wireless seems to disconnect much more during normal use, it might be time for a hardware change.

Thank you all very much for your advice!  :Thmbsup: As mentioned in my first post, they are all really appreciated - I certainly never thought that there could be so many things to try and think about, but this is very very helpful.

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